Supposed Maya predictions of the end of the world in 2012 have some people seriously scared. See what experts say about the unknown planet predicted to pummel Earth, the cataclysmic "galactic alignment," and more.

Several graves dating as far back as the early Stone Age--complete with dog-tooth jewelry and even a sitting woman--have been discovered during extensive digs in central Germany, archaeologists say.

In time for Halloween, archaeologists have unearthed a witch bottle—a stone jug that may have contained toenails, hair, and other bodily bits to deter witches and other evildoers.

A far cry from the Twilight vampires, naughty nurses, and Spider-Men of 2009, the first Halloween costumes included animal skins and heads, drag getups, and even mechanical horse heads, historians say.

Remarkably well-preserved pines that lived around Viking times have been discovered near a fjord in southwestern Norway, scientists say.

Though small enough to fit in your hand, a prehistoric animal has been long been seen as proof that apes and humans arose in Africa. But a new study says the creature wasn't an ape ancestor, after all—though it may be a red herring.

A cold snap that killed off much of North America's wildlife and early humans about 13,000 years ago was not caused by a comet impact as previously suggested, scientists say.

Weighing in at fewer than two pounds, the Chihuahua-size dinosaur Fruitadens haagarorum was an agile omnivore, a new study says.

What may be "the largest crater known on Earth" could be proof that the dinosaurs' demise was due to two giant space rocks that struck in Mexico and India, scientists say.

A newfound fossil predator, which may have hunted other flyers, is a hodgepodge of older and more modern flying reptiles, scientists say, bridging a gap in pterosaur evolution.

If the largest snake that ever lived were still slithering today, it would feel right at home in South America's rain forests, newfound fossils from the snake's ancient home reveal.

Young dinosaurs weren't Mini-Me versions of their parents, new evidence suggests—meaning that up to a third of dinosaur species may be misidentified.

Bigger and badder than the deadly Komodo dragon, a mysterious prehistoric lizard may be a new species, say scientists piecing together the Australian origins of reptilian giants.

Acid rain created by a volcanic eruption caused a devastating mass extinction, leaving the planet teeming with wood-eating fungi, a new study says.

See Bluestonehenge, the newly discovered site that archaeologists say was likely a key stop on the journey to the afterworld—and to Stonehenge itself—for many Stone Age Britons.